Current Conditions
Thornhill, Ontario
Wind
NNE 11 mph17 km/h
Humidity
44%
Cloud Cover
54%
As of Sunday, September 27, 2026 at 1:23 PM EDT
Today's Outlook
Day
Mostly cloudy and warm, with a high of 72°F22°C and morning low of 53°F12°C. Breezy from the NNE at 11 mph17 km/h. Dry air.
Night
Overcast, with a low around 61°F16°C. Breezy from the NE at 7 to 8 mph11 to 12 km/h.
7-Day Forecast
| Day | Condition | High (°F) | Low (°F) | Precip (mm) | Cloud Cover (%) | Wind (mph) | |
|---|---|---|---|---|---|---|---|
| Partly Cloudy | High 72°F22°C | Low 53°F12°C | Precip 0 in0.1 mm9% | Cloud 66% | Wind NNE 9 mph15 km/h | Sunday: Mostly cloudy and warm, with a high of 72°F22°C and morning low of 53°F12°C. Breezy from the NNE at 11 mph17 km/h. Dry air. Sunday Night: Overcast, with a low around 61°F16°C. Breezy from the NE at 7 to 8 mph11 to 12 km/h. | |
| Drizzle | High 67°F19°C | Low 56°F14°C | Precip 0.04 in0.9 mm25% | Cloud 83% | Wind N 6 mph10 km/h | Monday: Overcast and mild, with a high of 67°F19°C and morning low of 56°F14°C. Breezy from the N at 6 to 8 mph10 to 13 km/h. 22% chance of drizzle in the morning. Monday Night: Overcast, with a low around 57°F14°C. Breezy from the N at 6 to 8 mph10 to 13 km/h. 25% chance of drizzle overnight. | |
| Partly Cloudy | High 69°F21°C | Low 57°F14°C | Precip 0 in0.1 mm1% | Cloud 65% | Wind S 5 mph9 km/h | Tuesday: Mostly cloudy and warm, with a high of 69°F21°C and morning low of 57°F14°C. Light wind from the S around 5 mph8 km/h. Tuesday Night: Mostly cloudy, with a low around 58°F14°C. Breezy from the S at 6 to 7 mph9 to 11 km/h. | |
| Drizzle | High 69°F21°C | Low 58°F15°C | Precip 0.04 in0.9 mm23% | Cloud 97% | Wind SSW 8 mph13 km/h | Wednesday: Overcast and warm, with a high of 69°F21°C and morning low of 59°F15°C. Breezy from the SSW at 8 to 10 mph13 to 16 km/h. 15% chance of drizzle in the afternoon. Wednesday Night: Overcast, with a low around 58°F15°C. Breezy from the SSW at 8 to 10 mph13 to 16 km/h. 23% chance of drizzle in the evening. | |
| Light Rain | High 73°F23°C | Low 64°F18°C | Precip 0.17 in4.2 mm36% | Cloud 92% | Wind WSW 11 mph18 km/h | Thursday: Overcast and warm, with a high of 73°F23°C and morning low of 65°F18°C. Breezy from the SW at 11 to 12 mph18 to 20 km/h. 31% chance of light rain in the morning. Thursday Night: Overcast, with a low around 64°F18°C. Breezy from the WSW at 10 to 11 mph17 to 18 km/h. 36% chance of light rain overnight. | |
| Light Rain | High 64°F18°C | Low 54°F12°C | Precip 0.21 in5.4 mm36% | Cloud 79% | Wind NW 10 mph16 km/h | Friday: Overcast and mild, with a high of 64°F18°C and morning low of 57°F14°C. Breezy from the NW at 10 mph16 km/h. 36% chance of light rain in the morning. Friday Night: Mostly cloudy, with a low around 54°F12°C. Breezy from the NW at 10 mph16 km/h. 34% chance of light rain overnight. | |
| Drizzle | High 62°F16°C | Low 48°F9°CFeels 44°F7°C | Precip 0.06 in1.5 mm13% | Cloud 49% | Wind NNE 8 mph14 km/h | Saturday: Mostly cloudy and mild, with a high of 62°F16°C and morning low of 48°F9°C. Breezy from the NE at 8 to 9 mph14 to 14 km/h. Dry air. Saturday Night: Partly cloudy, with a low around 49°F9°C. Breezy from the N at 9 mph14 km/h. 13% chance of drizzle overnight. |
15-Day Forecast
| Day | High | Low | Precip | Cloud Cover | Condition | Wind | |
|---|---|---|---|---|---|---|---|
| SundaySep 27 | 72°F22°C | 53°F12°C | 0 in0.1 mm· 9% | 66% | Partly Cloudy | NNE 9 mph15 km/h | |
DayMostly cloudy and warm, with a high of 72°F22°C and morning low of 53°F12°C. Breezy from the NNE at 11 mph17 km/h. Dry air. NightOvercast, with a low around 61°F16°C. Breezy from the NE at 7 to 8 mph11 to 12 km/h. | |||||||
| MondaySep 28 | 67°F19°C | 56°F14°C | 0.04 in0.9 mm· 25% | 83% | Drizzle | N 6 mph10 km/h | |
DayOvercast and mild, with a high of 67°F19°C and morning low of 56°F14°C. Breezy from the N at 6 to 8 mph10 to 13 km/h. 22% chance of drizzle in the morning. NightOvercast, with a low around 57°F14°C. Breezy from the N at 6 to 8 mph10 to 13 km/h. 25% chance of drizzle overnight. | |||||||
| TuesdaySep 29 | 69°F21°C | 57°F14°C | 0 in0.1 mm· 1% | 65% | Partly Cloudy | S 5 mph9 km/h | |
DayMostly cloudy and warm, with a high of 69°F21°C and morning low of 57°F14°C. Light wind from the S around 5 mph8 km/h. NightMostly cloudy, with a low around 58°F14°C. Breezy from the S at 6 to 7 mph9 to 11 km/h. | |||||||
| WednesdaySep 30 | 69°F21°C | 58°F15°C | 0.04 in0.9 mm· 23% | 97% | Drizzle | SSW 8 mph13 km/h | |
DayOvercast and warm, with a high of 69°F21°C and morning low of 59°F15°C. Breezy from the SSW at 8 to 10 mph13 to 16 km/h. 15% chance of drizzle in the afternoon. NightOvercast, with a low around 58°F15°C. Breezy from the SSW at 8 to 10 mph13 to 16 km/h. 23% chance of drizzle in the evening. | |||||||
| ThursdayOct 1 | 73°F23°C | 64°F18°C | 0.17 in4.2 mm· 36% | 92% | Light Rain | WSW 11 mph18 km/h | |
DayOvercast and warm, with a high of 73°F23°C and morning low of 65°F18°C. Breezy from the SW at 11 to 12 mph18 to 20 km/h. 31% chance of light rain in the morning. NightOvercast, with a low around 64°F18°C. Breezy from the WSW at 10 to 11 mph17 to 18 km/h. 36% chance of light rain overnight. | |||||||
| FridayOct 2 | 64°F18°C | 54°F12°C | 0.21 in5.4 mm· 36% | 79% | Light Rain | NW 10 mph16 km/h | |
DayOvercast and mild, with a high of 64°F18°C and morning low of 57°F14°C. Breezy from the NW at 10 mph16 km/h. 36% chance of light rain in the morning. NightMostly cloudy, with a low around 54°F12°C. Breezy from the NW at 10 mph16 km/h. 34% chance of light rain overnight. | |||||||
| SaturdayOct 3 | 62°F16°C | 48°F9°C Feels 44°F7°C | 0.06 in1.5 mm· 13% | 49% | Drizzle | NNE 8 mph14 km/h | |
DayMostly cloudy and mild, with a high of 62°F16°C and morning low of 48°F9°C. Breezy from the NE at 8 to 9 mph14 to 14 km/h. Dry air. NightPartly cloudy, with a low around 49°F9°C. Breezy from the N at 9 mph14 km/h. 13% chance of drizzle overnight. | |||||||
| SundayOct 4 | 62°F17°C | 50°F10°C | 0.18 in4.6 mm· 26% | 67% | Showers | SSE 9 mph15 km/h | |
DayMostly cloudy and mild, with a high of 62°F17°C and morning low of 51°F11°C. Breezy from the SSE at 9 to 10 mph15 to 16 km/h. 26% chance of light rain in the morning. Dry air. NightMostly cloudy, with a low around 50°F10°C. Breezy from the SSE at 9 to 10 mph15 to 16 km/h. 21% chance of showers overnight. | |||||||
| MondayOct 5 | 58°F14°C | 47°F9°C Feels 43°F6°C | 0.06 in1.6 mm· 13% | 42% | Drizzle | WNW 11 mph18 km/h | |
DayPartly cloudy and mild, with a high of 58°F14°C and morning low of 49°F10°C. Breezy from the WNW at 12 to 13 mph19 to 21 km/h. 12% chance of drizzle in the morning. Dry air. NightPartly cloudy, with a low around 47°F9°C. Breezy from the WNW at 11 mph17 km/h. 13% chance of drizzle overnight. | |||||||
| TuesdayOct 6 | 59°F15°C | 43°F6°C Feels 38°F3°C | 0.02 in0.4 mm· 3% | 31% | Clear | W 9 mph14 km/h | |
DayPartly cloudy and mild, with a high of 59°F15°C and morning low of 43°F6°C. Breezy from the W at 9 mph14 km/h. Dry air. NightPartly cloudy, with a low around 43°F6°C. Breezy from the W at 9 mph14 km/h. | |||||||
| WednesdayOct 7 | 63°F17°C | 47°F8°C Feels 43°F6°C | 0.02 in0.4 mm· 9% | 38% | Clear | SW 10 mph16 km/h | |
DayPartly cloudy and mild, with a high of 63°F17°C and morning low of 47°F9°C. Breezy from the SW at 11 to 12 mph17 to 19 km/h. Dry air. NightPartly cloudy, with a low around 47°F8°C. Breezy from the SW at 10 to 11 mph16 to 17 km/h. | |||||||
| ThursdayOct 8 | 60°F16°C | 49°F9°C Feels 45°F7°C | 0.08 in2.1 mm· 22% | 46% | Showers | W 11 mph17 km/h | |
DayPartly cloudy and mild, with a high of 60°F16°C and morning low of 49°F9°C. Breezy from the WSW at 11 to 12 mph18 to 19 km/h. 22% chance of showers in the morning. Dry air. NightPartly cloudy, with a low around 49°F10°C. Breezy from the W at 10 to 11 mph16 to 17 km/h. 14% chance of drizzle before dawn. | |||||||
| FridayOct 9 | 57°F14°C | 45°F7°C Feels 40°F5°C | 0.05 in1.3 mm· 13% | 39% | Drizzle | W 10 mph17 km/h | |
DayPartly cloudy and mild, with a high of 57°F14°C and morning low of 45°F7°C. Breezy from the W at 11 to 12 mph17 to 19 km/h. 13% chance of drizzle in the morning. Dry air. NightPartly cloudy, with a low around 46°F8°C. Breezy from the W at 10 to 11 mph16 to 17 km/h. | |||||||
| SaturdayOct 10 | 58°F14°C | 44°F7°C Feels 38°F4°C | 0.07 in1.9 mm· 14% | 44% | Drizzle | W 10 mph17 km/h | |
DayPartly cloudy and mild, with a high of 58°F14°C and morning low of 44°F7°C. Breezy from the WSW at 11 to 12 mph17 to 19 km/h. 12% chance of drizzle in the morning. Dry air. NightPartly cloudy, with a low around 44°F7°C. Breezy from the W at 10 to 11 mph16 to 17 km/h. 14% chance of drizzle overnight. | |||||||
| SundayOct 11 | 58°F15°C | 46°F8°C Feels 41°F5°C | 0.09 in2.3 mm· 16% | 48% | Drizzle | WSW 10 mph17 km/h | |
DayMostly cloudy and mild, with a high of 58°F15°C and morning low of 46°F8°C. Breezy from the WSW at 11 mph17 km/h. 16% chance of drizzle in the morning. Dry air. NightPartly cloudy, with a low around 46°F8°C. Breezy from the W at 10 mph16 km/h. 16% chance of drizzle overnight. | |||||||
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Coordinates: 43.8150°N, 79.4242°W·Elevation: 175m·Timezone: America/Toronto·Population: 115,292